The hammock is a sling made of fabric, rope, or netting

The hammock is a sling made of fabric, rope, or netting, suspended between two points, used for swinging, sleeping, or resting. It normally consists of one or more cloth panels, or a woven network of twine or thin rope stretched with ropes between two firm anchor points such as trees or posts. Hammocks were developed by native inhabitants of tropical regions for sleeping. Later, they were used aboard ships by sailors to enable comfort and maximize available space, and by explorers or soldiers traveling in wooded regions. Today they are popular around the world for relaxation; they are also used as a lightweight bed on camping trips. The hammock is often seen as symbol of summer, leisure, relaxation and simple, easy living.
Spanish colonists noted the use of the hammock by Native Americans, particularly in the West Indies, at the time of the Spanish conquest.The word comes from a Taíno culture Arawakan word (Haiti) meaning "fish net". Early hammocks were woven out of bark from a hamack tree, and later this material was replaced by sisal fibers because it was more abundant. One of the reasons that hammocks became popular in Central and South America was their ability to provide safety from disease transmission, insect stings, or animal bites. By suspending their beds above ground, inhabitants were better protected from snakes, biting ants, and other harmful creatures. Hammocks were introduced to Europe by Christopher Columbus when he brought several of them back to Spain from islands in the present day Bahamas.
The Native American origin of the modern hammock and its name is often obscured in English-language sources from the late 18th century onward. Samuel Johnson claimed that the word was of Saxon origin. This etymology was soon debunked, and later 19th-century sources attributed the invention to the Athenian politician Alcibiades. This was inferred from Plutarch, who wrote that Alcibiades had his galley bed hung from ropes, but did not specifically describe it as a net or sling. A few European sources mention the historical use of cloth slings as carriage seats, but not as regular beds.